7332
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 18816
- Proper Divisor Sum (Aliquot Sum)
- 11484
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2208
- Möbius Function
- 0
- Radical
- 3666
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 4
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 44
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Numbers that are the sum of 12 positive 7th powers.at n=42A003379
- Numbers that are the sum of 7 nonzero 8th powers.at n=11A003385
- a(n) = floor( n*(n-1)*(n-2)/28 ).at n=60A011910
- Expansion of 1/(1-x^3-x^4-x^5-x^6).at n=32A017819
- a(1) = 7; a(n+1) = a(n)-th nonprime, where nonprimes begin at 0.at n=31A025002
- Numbers k such that k^256 + 1 is prime.at n=23A056995
- Total number of parts in all partitions of n into odd parts.at n=36A067588
- Multiples of 6 with only prime digits (2, 3, 5 and 7).at n=24A077535
- Double partial sums of (n * its dyadic valuation).at n=35A090889
- Records in A091840.at n=7A091841
- a(n) = digit reversal of A103741(n).at n=17A103763
- a(n) = 216*n - 12.at n=33A154518
- Averages of twin prime pairs of A154546.at n=29A154548
- A recursion triangle sequence based on the Eulerian numbers: A(n,k)=n*A(n-1,k-1)+k*Eulerian(n-1,k).at n=23A157743
- Partial sums of A000798.at n=5A173399
- Numbers n such that sigma(lambda(n)) = lambda(sigma(n)).at n=23A173942
- A triangle sequence of the form: T(n,m) = binomial(n, m) + floor(Eulerian(n + 1, m)/2).at n=38A174035
- A triangle sequence of the form: T(n,m) = binomial(n, m) + floor(Eulerian(n + 1, m)/2).at n=42A174035
- Where zeros occur in the 1-0 race in the binary expansion of Pi-3; that is, n such that A174832(n) = 0.at n=50A178980
- Smallest average of twin prime pairs s such that s^(2^n)+1 is prime.at n=7A182065